I love staying at Charlotte's place! A lot of food stalls around the corner, 7/11 and family mart are there too and there is a veggies wet market down the next street. The room is spacey and the bed is hugeee! I think it can fit 2 adults and 1 kid? I definitely like the bed although it's a bit springy but I got used to it during my stay.
One thing I like about my stay is there is a WM inside the apartment which is why I choosed to stay in this place. TBH, I'm not fond of bringing my laundries out of the room with people seeing it. So this is a definitely +++ for me. The AC and internet is also good as most of the time I stayed hole up inside the room to study on the weekends.
I was able to cook some quick food using the toaster, microwave and or electric hot plate. The ref is also spacious for me which I stock up with a couple of drinks and veggies!
A note though, this place is abit far from BTS Sala Daeng and Silom Complex mall, maybe around of 25 minutes walk and the neighborhood is real BKK but there is a red numbered color jeep/bus you can use to go to places but I don't speak Thai. If you can manage, it can be great but most of the time I walk to school/mall for exercise.
Also, the Thailand Post office is down the main street which is great for students like me who wants to send some heavy stuff back home and if you are ordering online, you can pick it up directly at admin office which is totally awesome!
I can say, the neighborhood is safe. I sometimes walk back very late at night (10 to 12pm) and it's still ok and safe.
I would definitely recommend Charlotte's place if you plan to stay at BKK on a long run.